The rule in drama or anime, the girl always gets the 'bad boy outside but soft inside' and it fits Yeonjun image perfectly. While Soobin image is typically second male lead who act like an angel and always there for the girl. But he always gets stood up because the girl choosing to help the bad boy and might leaving 2nd male lead standing in the middle of the rain while sad kdrama ost being played
I... So my choice is Yeonjun kkkk